S10 front single calipers rear S10 blazer 2000 disc

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S10 front single calipers rear S10 blazer 2000 disc

Postby 67shovel » Thu Nov 26, 2015 10:57 am

I've got 1990 S10 single piston front disc's and spindles on my Vega wagon. Then I found a 2000 2wl drive disc rear end and mounted it. I've got (what I believe) is a 1990 S10 master cylinder plumbed up to the stock 73 Vega safety switch. Finally got it on the road and I have a soft pedal and not much rear braking. What's my next move to make this hogpodge work?
Thanks,
Roger
79 Monza wagon Pro street, cage tubs narrowed 9
73 GT Vega wagon street car 355 700r4 a/c
68 RS Z/28 302
67 SS 396
Cobra replica
65 Corvair Corsa midengine 301
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby 77nighthawk » Thu Nov 26, 2015 9:47 pm

67shovel, you need to install an adjustable proportioning valve, in place of the factory one, and bleed the brakes. Once this is done, adjust the valve until all brakes are grabbing good. Brad
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby 67shovel » Fri Nov 27, 2015 9:49 am

Thanks for a reply. I don't seem to have enough signal to the rear so would putting an adjustable prop valve on the rear line help?
79 Monza wagon Pro street, cage tubs narrowed 9
73 GT Vega wagon street car 355 700r4 a/c
68 RS Z/28 302
67 SS 396
Cobra replica
65 Corvair Corsa midengine 301
http://pictures.sprintpcs.com/share.do? ... =RETRIEVED
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby 77nighthawk » Fri Nov 27, 2015 5:21 pm

My bad, I should have been a little more specific. You'll need to replace the factory proportioning valve with a unit like the one here on Jeg's site.

http://www.jegs.com/i/JEGS-Performance- ... tId=762853

This should fix the problem. The factory bias is something like 60/40, front/rear(I think). By upgrading to the larger caliper up front, and changing from a small wheel cylinder to a large caliper in rear, you need more bias to the rear. Hope this helps. Brad
If it don't scare me, I don't want it.

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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby 67shovel » Sat Nov 28, 2015 8:38 pm

That looks like just the ticket. Thank you very much.
Roger
79 Monza wagon Pro street, cage tubs narrowed 9
73 GT Vega wagon street car 355 700r4 a/c
68 RS Z/28 302
67 SS 396
Cobra replica
65 Corvair Corsa midengine 301
http://pictures.sprintpcs.com/share.do? ... =RETRIEVED
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby rodsradrods » Sat Dec 05, 2015 7:07 pm

I have a 76 vega wagon and on the rear suspension there is supposed to be a torque arm that runs to the transmission. Mine is missing and can't find one. Any suggestions? New or used?
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby 77nighthawk » Sat Dec 05, 2015 9:10 pm

You won't find a new one. What motor and tranny do you have in the car? Your only options for an arm, are to find a used one, or to fabricate one. I imagine several people on this forum have some lying around. Brad
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby crawfw » Mon Dec 07, 2015 9:35 am

to rodradarods

some pics might help here. Has the car been 4 linked(aka ladder bars or upper control arms added). If so the torque arm is not needed or wanted unless you do away with the uppers or ladder bars. 4 link with torque arm would cause binding issues.
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby cjbiagi » Mon Dec 07, 2015 10:35 am

Early H bodies up to 1975 do not have a proportioning valve, all that is is a distribution block. You are already getting full rear brake bias so installing a adjustable one which can only reduce pressure, not increase it won't help. You may may need a different master cylinder, is the master cylinder you are using designed for rear disc brakes?
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby 67shovel » Mon Dec 07, 2015 4:31 pm

I don't think so Clyde. I believe it's from and S10 disc/drum set up. Is just bumping up bore size enough or should I spring for a disc/disc say off of a 2000 Blazer that was a four whl disc vehical?

I finaly figured out my phone pics so here comes some pics of the Vega you all helped produce over the last 4 + years.
I want to thank you all for making it possible to rebuild these Vegas. My outcome would not has been as good wthout you all.
Thanks,
Roger :th:
Attachments
vega motor.JPG
355, 700R4, POWER WINDOWS/SEATS, tilt, GT, Monza deep pockets, S10 frt disc, rear S10 blazer posi, transverse Flowmaster (to loud for this old man)
vega motor.JPG (119.28 KiB) Viewed 633 times
vega.JPG
cut and filled in bumpers w/bolts welded up.
vega.JPG (104.03 KiB) Viewed 633 times
nomad vega.JPG
addd 1976 Nomad panels to it and shaved the drip rails (what a pain that was)
nomad vega.JPG (113.4 KiB) Viewed 633 times
vega rear.JPG
Had the optional dealer rear stripe so I kept it. Reminds me of the big block black out from years earlier
vega rear.JPG (116.04 KiB) Viewed 633 times
Dos Vegas.JPG
picked up the future Pro Street "Tubby" from Rusty Pile a year or so ago. It's on the stove now getting built
Dos Vegas.JPG (117.99 KiB) Viewed 633 times
79 Monza wagon Pro street, cage tubs narrowed 9
73 GT Vega wagon street car 355 700r4 a/c
68 RS Z/28 302
67 SS 396
Cobra replica
65 Corvair Corsa midengine 301
http://pictures.sprintpcs.com/share.do? ... =RETRIEVED
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby cjbiagi » Mon Dec 07, 2015 5:22 pm

Looks like a very nice high quality build. Engine compartment looks very detailed, would love to see more pics.
Personally if I was running disc/disc brakes I would opt for a correct MC designed for that type of application. I beleive the discs require more pressure than drums so having the correct style MC is a priority. After that then you can install a adjustable proportioning valve and fine tune the bias.
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby Monza Harry » Mon Dec 07, 2015 11:45 pm

cjbiagi wrote:Looks like a very nice high quality build. Engine compartment looks very detailed, would love to see more pics.

And the little stuff that doesn't feel that little when your doing it, like your bumper ends, capped nicely and re-chromed. You have to be pretty happy with how that turned out, :D :dance: I would like it, that is for sure! :th: Harry
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby 67shovel » Tue Dec 08, 2015 9:35 am

Thanks guys, I'll do an in depth post on the Vega later in the week. I'm going to get a disc/disc master cylinder now but I'm at a loss. I bought the rear S10 blazer rear out of a swap meet and when I go to buy a master cylinder they can't tell me which one is for a disc/disc Blazer. They ask me if it had 2 or 4 doors. Been digging on the web and see 4 dr 4whl drive 2003 Blazers with rear disc's. Is that the master cylinder you'd go for? What Blazers came with 4 whl disc's?
I already have the adjustable proprotioning valve now and are waiting on some adapter fittings to show from a brake company. Should I install it anyway to make sure I can dial this in even with a disc/disc master clylinder or would you just run the stock 1973 safety switch?
Thanks,
Roger
79 Monza wagon Pro street, cage tubs narrowed 9
73 GT Vega wagon street car 355 700r4 a/c
68 RS Z/28 302
67 SS 396
Cobra replica
65 Corvair Corsa midengine 301
http://pictures.sprintpcs.com/share.do? ... =RETRIEVED
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby cosvega76 » Tue Dec 08, 2015 9:36 am

cjbiagi wrote:Looks like a very nice high quality build. Engine compartment looks very detailed, would love to see more pics.
Personally if I was running disc/disc brakes I would opt for a correct MC designed for that type of application. I beleive the discs require more pressure than drums so having the correct style MC is a priority. After that then you can install a adjustable proportioning valve and fine tune the bias.


Clyde,

It isn't so much the pressure (they both need 1200-1400 psi) as the volume needed to fill the large pistons that calipers use. I'm using a 15/16" bore master with the C4 Corvette front calipers/Explorer-Windstar rear calipers on my car, vs the 3/4" stock Vega master. A smaller bore master makes more pressure, but only if there is enough volume so the pedal is at a good height. I have a wrinkled front fender at home from using too small of a master.... :cuss:


Chuck
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Re: S10 front single calipers rear S10 blazer 2000 disc

Postby Monza Harry » Tue Dec 08, 2015 3:44 pm

Roger I go to O'Rielly's or Auto Zone and sometimes Advance auto's sites and use their on-line parts "Chasers" (look up) to see which years came with what parts and when happy I know who has them on the shelf. Yes the smaller piston will increase pressure but like Chuck says, at the expense of volume which comes with a similar expensive education to Chuck's advanced degree
cosvega76 wrote: I have a wrinkled front fender at home from using too small of a master.... :cuss: Chuck
I am sure there are a few of those "degree's" around here. Don't ask Don't Tell that's my new policy :lol: Ok :bang: You may have to adjust your pedal ratio to make this "just the way you want" as the larger diameter will increase pedal force required [this will decrease the pressure] or you may have to play with booster diameter to get your pedal feel right after you are happy with pressure and balance {Bias,} you may still need to add a proportioning valve. I hope this helps, I know it adds more questions but hopefully direction to the answers as well. Harry
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